Mercurial > sdl-ios-xcode
view src/video/nanox/SDL_nxmouse.c @ 4355:9b464226e541 SDL-1.2
Fixed bug #855
Ludwig Nussel 2009-10-18 06:31:52 PDT
an mprotect call was added to fix bug 528. However that results in a buffer
that allows writing and code execution. Ie the no-execute security features of
modern operating systems are defeated this way. Two mprotect calls are needed.
One to make the buffer executable but not writeable when done and another one
to make the buffer writeable again if the content needs to be changed.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 18 Oct 2009 17:31:37 +0000 |
parents | a1b03ba2fcd0 |
children |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga Copyright (C) 2001 Hsieh-Fu Tsai This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org Hsieh-Fu Tsai clare@setabox.com */ #include "SDL_config.h" #include "../../events/SDL_events_c.h" #include "SDL_nxmouse_c.h" // The implementation dependent data for the window manager cursor struct WMcursor { int unused ; } ; WMcursor * NX_CreateWMCursor (_THIS, Uint8 * data, Uint8 * mask, int w, int h, int hot_x, int hot_y) { WMcursor * cursor ; Dprintf ("enter NX_CreateWMCursor\n") ; cursor = (WMcursor *) SDL_malloc (sizeof (WMcursor)) ; if (cursor == NULL) { SDL_OutOfMemory () ; return NULL ; } Dprintf ("leave NX_CreateWMCursor\n") ; return cursor ; } void NX_FreeWMCursor (_THIS, WMcursor * cursor) { Dprintf ("NX_FreeWMCursor\n") ; SDL_free (cursor) ; return ; } void NX_WarpWMCursor(_THIS, Uint16 x, Uint16 y) { GR_WINDOW_INFO info ; Dprintf ("enter NX_WarpWMCursor\n") ; SDL_Lock_EventThread () ; GrGetWindowInfo (SDL_Window, & info) ; GrMoveCursor (info.x + x, info.y + y) ; SDL_Unlock_EventThread () ; Dprintf ("leave NX_WarpWMCursor\n") ; } int NX_ShowWMCursor (_THIS, WMcursor * cursor) { Dprintf ("NX_ShowWMCursor\n") ; return 1 ; }